/*
* Copyright 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.eclipse.org/legal/epl-v10.html
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.dart.engine.ast;
import com.google.dart.engine.scanner.Token;
/**
* The abstract class {@code FunctionBody} defines the behavior common to objects representing the
* body of a function or method.
*
* <pre>
* functionBody ::=
* {@link BlockFunctionBody blockFunctionBody}
* | {@link EmptyFunctionBody emptyFunctionBody}
* | {@link ExpressionFunctionBody expressionFunctionBody}
* </pre>
*
* @coverage dart.engine.ast
*/
public abstract class FunctionBody extends AstNode {
/**
* Return the token representing the 'async' or 'sync' keyword, or {@code null} if there is no
* such keyword.
*
* @return the token representing the 'async' or 'sync' keyword
*/
public Token getKeyword() {
return null;
}
/**
* Return the star following the 'async' or 'sync' keyword, or {@code null} if there is no star.
*
* @return the star following the 'async' or 'sync' keyword
*/
public Token getStar() {
return null;
}
/**
* Return {@code true} if this function body is asynchronous.
*
* @return {@code true} if this function body is asynchronous
*/
public boolean isAsynchronous() {
return false;
}
/**
* Return {@code true} if this function body is a generator.
*
* @return {@code true} if this function body is a generator
*/
public boolean isGenerator() {
return false;
}
/**
* Return {@code true} if this function body is synchronous.
*
* @return {@code true} if this function body is synchronous
*/
public boolean isSynchronous() {
return true;
}
}